please see pic attached and provide an explanation for part b. Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia2.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.20 kg · m2 about its central axis, is set spinning counterclockwise at 700rev/min. They then couple together.(a) What is their angular speed after coupling?570.129870129rev/min(b) If instead the second disk is set spinning clockwise at 700 rev/min, what is their angular speed after they couple together?|-375.32467532 X rev/min(c) What is their direction of rotation after they couple together?counterclockwiseclockwise

Given: Ist disc rotational inertia I1 = 2.50 kg.m2 Spinning counterclockwise ω1 = 300 revmin 2nd…

Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 2.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.20 kg · m? about its central axis, is set spinning counterclockwise at 700 rev/min. They then couple together. (a) What is their angular speed after coupling? 570.129870129 y rev/min (b) If instead the second disk is set spinning clockwise at 700 rev/min, what is their angular speed after they couple together? -375.32467532 x rev/min (c) What is their direction of rotation after they couple together? counterclockwise o clockwise

Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 2.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.20 kg · m? about its central axis, is set spinning counterclockwise at 700 rev/min. They then couple together. (a) What is their angular speed after coupling? 570.129870129 y rev/min (b) If instead the second disk is set spinning clockwise at 700 rev/min, what is their angular speed after they couple together? -375.32467532 x rev/min (c) What is their direction of rotation after they couple together? counterclockwise o clockwise

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 89AP: A solid cylinder of mass 2.0 kg and radius 20 cm is rotating counterclockwise around a vertical axis...

See similar textbooks

Similar questions

The propeller of an aircraft accelerates from rest with an angular acceleration = 4t + 6, where is in rad/s2 and t isin seconds. What is the angle in radians through which thepropeller rotates from t = 1.00 s to t = 6.00 s?
A disk 8.00 cm in radius rotates at a constant rate of 1200 rev/min about its central axis. Determine (a) its angular speed in radians per second, (b) the tangential speed at a point 3.00 cm from its center, (c) the radial acceleration of a point on the rim, and (d) the total distance a point on the rim moves in 2.00 s.
Jeff, running outside to play, pushes on a swinging door, causing its motion to be briefly described by = t2 + 0.800 t + 2.00,where t is in seconds and is in radians. At t = 0 and at t = 1.50s, what are the a. angular position, b. angular speed, and c. angularacceleration of the door?
Why is the following situation impossible? Starting from rest, a disk rotates around a fixed axis through an angle of 50.0 rad in a time interval of 10.0 s. The angular acceleration of the disk is constant during the entire motion, and its final angular speed is 8.00 rad/s.
A solid cylinder of mass 2.0 kg and radius 20 cm is rotating counterclockwise around a vertical axis through its center at 600 rev/min. A second solid cylinder of the same mass and radius is rotating clockwise around the same vertical axis at 900 rev/min. If the cylinders couple so that they rotate about the same vertical axis, what is the angular velocity of the combination?
A thin rod of length 2.65 m and mass 13.7 kg is rotated at anangular speed of 3.89 rad/s around an axis perpendicular to therod and through its center of mass. Find the magnitude of therods angular momentum.
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.00 kg (Fig. P10.56). When his arms are extended horizontally (Fig. P10.56a), the dumbbells are 1.00 m from the axis of rotation and the student rotates with an angular speed of 0.750 rad/s. The moment of inertia of the student plus stool is 3.00 kg m2 and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.300 m from the rotation axis (Fig. P10.56b). (a) Find the new angular speed of the student. (b) Find the kinetic energy of the rotating system before and after he pulls the dumbbells inward. Figure P10.56
During a certain time interval, the angular position of a swinging door is described by = 5.00 + 10.0t + 2.00t2, where is in radians and t is in seconds. Determine the angular position, angular speed, and angular acceleration of the door (a) at t = 0 and (b) at t = 3.00 s.
In testing an automobile tire for proper alignment, a technicianmarks a spot on the tire 0.200 m from the center. He then mountsthe tire in a vertical plane and notes that the radius vector to thespot is at an angle of 35.0 with the horizontal. Starting from rest,the tire is spun rapidly with a constant angular acceleration of 3.00 rad/s2. a. What is the angular speed of the wheel after 4.00 s? b. What is the tangential speed of the spot after 4.00 s? c. What is the magnitude of the total accleration of the spot after 4.00 s?" d. What is the angular position of the spot after 4.00 s?
The velocity of a particle of mass m = 2.00 kg is given by v= 5.10 + 2.40 m /s. What is the angular momentumof the particle around the origin when it is located atr= 8.60 3.70 m?
A uniform rod of length b stands vertically upright on a rough floor and then tips over. What is the rods angular velocity when it hits the floor?
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 3.31 kg·m2 about its central axis, is set spinning counterclockwise (which may be taken as the positive direction) at 495 rev/min. The second disk, with rotational inertia 5.57 kg·m2 about its central axis, is set spinning counterclockwise at 773 rev/min. They then couple together. (a) What is their angular speed after coupling? If instead the second disk is set spinning clockwise at 773 rev/min, what are their (b) angular velocity (using the correct sign for direction) and (c) direction of rotation after they couple together?